Teeter totter



FIG. 1 is a front elevational view of a teeter totter showing my new design, the rear view being a mirror image;

FIG. 2 is a right side elevational view thereof, the left side view appearing the same;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a teeter totter, as shown and described. 